Here's mine:
The name is "The cannon", because that structure looks like a cannon, and because the only direction to KO opponents to is upwards, which is like getting shot out from the inside of a cannon.
The stage is absolutely filled with hazards. The most dangerouns points are the tunnel at the bottom and the pits on the sides. The tunnel is somewhat easy to avoid, but you're constantly risking getting plummeted to the bottom by a powerful blow and a bounce off a block. If you accidentally get yourself to the middle of the tunnel, it's bouncing in spikes and getting a slight percentage boost.
The pits on the sides are possible to avoid, but deadly. If you fall down, pray that either a: your character can walljump, or b: your character has a great vertical recovery. If the block manages to materialize again... Well, let's just say that you're temporarily out of the match bouncing in the pit until your opponent decides to release you by dropping the platform above (and by then you're probably at 999% and will die thanks to the spikes shooting you off the top of the screen). Due to traps like this, a time limit on this stage is recommended.
The middle part has several platforms you can move on. The platform in the middle is the only "safe area" of the stage, and even that has spikes on the edges. Everywhere else you're on moving and falling platforms and constantly risking getting thrown to the spikes. You can also try to cling to the ladders, but then you can't really guard yourself when the opponent comes after you.
This stage fits best in 4 player brawls just because of the incredible mayhem it causes. You'll be watching your step everywhere. Thankfully, falling doesn't mean death, but it certainly means a lot of pain. Also, it should be played in a time limited stock match to make the "pits" on the sides fair (altough if 2 people get stuck and the other 2 lose all their stocks, be ready to exit the match).